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fluoresceine

/flʊˈrɛs.iːn/

翻译: 一种黄色染料,即使高度稀释仍可见,用作化学滴定中的吸附指示剂,例如在硝酸银滴定氯化钠沉淀氯化银时,当氯离子耗尽后荧光素阴离子被吸附而呈现粉红色。

1 个条目

noun

/flʊˈrɛs.iːn/C2formalscientific
  • zh一种黄色染料,即使高度稀释仍可见,用作化学滴定中的吸附指示剂,例如在硝酸银滴定氯化钠沉淀氯化银时,当氯离子耗尽后荧光素阴离子被吸附而呈现粉红色。

A yellow dye that remains visible even when highly diluted, used as an absorption indicator in chemical titrations, such as when silver nitrate is added to sodium chloride to precipitate silver chloride, turning pink when no chloride ions remain and negative fluorescein ions are absorbed.

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  1. Yellow dye used in chemistryC1formalscientific

    A yellow fluorescent dye that remains visible even at very low concentrations; often used as an absorption indicator in precipitation titrations, especially when testing for chloride ions with silver nitrate.

    zh荧光素

    • Chemists use fluoresceine to detect the endpoint in chloride titrations.
    • When all chloride ions have precipitated, the fluoresceine solution turns pink.
    • The dye’s high visibility makes it useful for tracing water flows.

    同义词fluoresceinresorcinolphthalein